From c88db160a30cccb81303212b256680f2e37e35ae Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Mon, 21 May 2012 08:44:33 -0700 Subject: [PATCH] xhci: Fix DIV_ROUND_UP compile error. Fengguang reports that the xHCI driver isn't linked properly on his machine: ERROR: "__udivdi3" [drivers/usb/host/xhci-hcd.ko] undefined! ERROR: "handle_edge_irq" [drivers/gpio/gpio-pch.ko] undefined! ERROR: "irq_to_desc" [drivers/gpio/gpio-pch.ko] undefined! The driver compiles fine on my 64-bit box (gcc version 4.6.1). Fengguang thinks it's because the xHCI driver was using DIV_ROUND_UP() instead of DIV_ROUND_UP_ULL() with arguments that were unsigned long long variables. Signed-off-by: Sarah Sharp Reported-by: Wu Fengguang --- drivers/usb/host/xhci.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index ad9ef05..afdc73e 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -3956,7 +3956,7 @@ static u16 xhci_calculate_intel_u1_timeout(struct usb_device *udev, /* Otherwise the calculation is the same as isoc eps */ case USB_ENDPOINT_XFER_ISOC: timeout_ns = xhci_service_interval_to_ns(desc); - timeout_ns = DIV_ROUND_UP(timeout_ns * 105, 100); + timeout_ns = DIV_ROUND_UP_ULL(timeout_ns * 105, 100); if (timeout_ns < udev->u1_params.sel * 2) timeout_ns = udev->u1_params.sel * 2; break; @@ -3965,7 +3965,7 @@ static u16 xhci_calculate_intel_u1_timeout(struct usb_device *udev, } /* The U1 timeout is encoded in 1us intervals. */ - timeout_ns = DIV_ROUND_UP(timeout_ns, 1000); + timeout_ns = DIV_ROUND_UP_ULL(timeout_ns, 1000); /* Don't return a timeout of zero, because that's USB3_LPM_DISABLED. */ if (timeout_ns == USB3_LPM_DISABLED) timeout_ns++; @@ -4004,7 +4004,7 @@ static u16 xhci_calculate_intel_u2_timeout(struct usb_device *udev, timeout_ns = u2_del_ns; /* The U2 timeout is encoded in 256us intervals */ - timeout_ns = DIV_ROUND_UP(timeout_ns, 256 * 1000); + timeout_ns = DIV_ROUND_UP_ULL(timeout_ns, 256 * 1000); /* If the necessary timeout value is bigger than what we can set in the * USB 3.0 hub, we have to disable hub-initiated U2. */ -- 2.7.4